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Surface modification of poly(tetrafluoroethylene-co-hexafluoropropylene) with vacuum UV radiation from rotating helium dc arc plasmas.
- Source :
- Journal of Adhesion Science & Technology; 2007, Vol. 21 Issue 10, p983-998, 16p, 1 Diagram, 6 Charts, 7 Graphs
- Publication Year :
- 2007
-
Abstract
- Treatment of poly(tetrafluoroethylene-co-hexafluoropropylene) (FEP) with vacuum ultraviolet (VUV) radiation from high pressures of helium in rotating dc arc plasmas was investigated. X-ray photoelectron spectroscopy (XPS) detected defluorination and appearance of the functional groups (C=O, O–C=O and C–O) on the surface. Fourier transform infrared (FT-IR) spectroscopy showed the appearance of a band at 1884 cm<superscript>-1</superscript> indicating the formation of the carboxylic acid fluoride moiety, –(C=O)–F. Improvement in film wettability was observed by contact angle measurements while SEM micrographs showed an increased amount of cracking on the surface with VUV exposure. Adhesion measurements of Cu sputter-coated onto the photo-modified surfaces resulted in failure within the fluoropolymer (cohesive failure) and not at the Cu-fluoropolymer interface. Cohesive failure occurred with shorter treatment times than for VUV exposure downstream from low pressure Ar microwave plasmas. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01694243
- Volume :
- 21
- Issue :
- 10
- Database :
- Complementary Index
- Journal :
- Journal of Adhesion Science & Technology
- Publication Type :
- Academic Journal
- Accession number :
- 25944742
- Full Text :
- https://doi.org/10.1163/156856107781393929